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US 4,069,594 AGranted
Drying cylinder
AssigneeSulzer Brothers Limited
InventorGuntram Feurstein
Life of this patent
Estimating the term…
Abstract
The grooves of the drying cylinder are provided with turbulence producers in the form of U-shaped inserts, split rings, perforated strips or bands, and lattice-like wire strips in order to create turbulence in the otherwise laminar flow of condensate. This turbulence eliminates the heat insulating effect of the condensate. The turbulence producers are spaced from the base of a groove by at least 0.5 millimeters while the maximum spacing of the internal surface of the producers from the groove base is 10 millimeters.
Claims12
A drying cylinder for a paper making machine comprising
- a rotatable cylinder having an internal wall;
- a plurality of peripheral grooves formed in said wall, each said groove having a base;
- a plurality of discharge tubes secured in said cylinder for rotation therewith, each said tube communicating with a respective one of said grooves to remove condensate therefrom;
- and
- a plurality of turbulence producers disposed in said grooves, each said turbulence producer having at least one transverse part extending transversely of a respective groove in spaced relation to said base of said respective groove to define a gap therebetween.
2 more elements
Dependencies are inferred from the claim text.